For the NIC you need to load the correct module, i dont know which one, but someone else will probably be able to answer that.
For use of both processsors you need a SMP kernel, and check /proc/cpuinfo to see if both are recognized. Then you can use gkrellm to see if load balancing is working well, just set it up to show two graphs, one for each processor.
HTH
-NSKL
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